Sample paper d edco maths

Cammie

hi, am going through the sample papers for leaving cert. Most people seem to be posting bout paper 2 but I have a problem with the paper 1 sample paper d. Q.2 part (ii) the alpha and beta identity won't work out for me no matter how many different ways I've tried it. I have asked my teacher and she says she thinks there's a mistake in the question. Has anyone got a solution for this please?

ahmdoda

yea i showed the question to my teacher he said it was no longer in the maths course

lostatsea

ahmdoda wrote: »

yea i showed the question to my teacher he said it was no longer in the maths course

Which begs the question as to why people continue to use these papers!!

CookieMonster.x

ahmdoda wrote: »

yea i showed the question to my teacher he said it was no longer in the maths course

It's an algebra question and it can be solved without using the maths that was on the old course.

Cammie

Cookiemonster, can you explain the solution so - just for curiosity; wud luv to show my teacher!

CookieMonster.x

Cammie wrote: »

Cookiemonster, can you explain the solution so - just for curiosity; wud luv to show my teacher!

Yep I intended on posting it but it will probably be later today or tomorrow when I post it.

CookieMonster.x

Sorry it has taken so long for me to reply. I didn't realise it was sample D you wanted, I've only done the question which is very similar for sample C. I don't think I have time to do the question out at the moment but if you want I can outline the steps for sample C anyway? I presume they use the same method. Sorry for the late reply again.

Undeadfred

for that question i got the answer to be c

aarond280

I got the answer to be c also

Leaving Cert Student

Yeah it is unsolvable, they made a mistake.

EvM

I haven't done any alpha and beta questions at all as I just assumed none of them were on the course anymore. How would I go about doing a question like this?

edit: never mind, think I have it now

Leaving Cert Student

Dude they are just the same as regular letters

Undeadfred

Jesus has anyone done question 1 part b from Sample E paper? its fookin unpossible. Literally spent 45 minutes trying to get the answer out with pages of algebra and equations

Leaving Cert Student

Undeadfred wrote: »

Jesus has anyone done question 1 part b from Sample E paper? its fookin unpossible. Literally spent 45 minutes trying to get the answer out with pages of algebra and equations

Ya I got it. You have to get the two roots and multiply one by k. I multiplied the wrong one by k initially but it worked the second time then on the other root, can't remember which one though so you'll have to try both!

Undeadfred

Leaving Cert Student wrote: »

Ya I got it. You have to get the two roots and multiply one by k. I multiplied the wrong one by k initially but it worked the second time then on the other root, can't remember which one though so you'll have to try both!

Yeah its actually grand, fairly easy actually. Before I was using the (sum)x + (product) method incorrectly and so just got pages upon pages of huge long -b formula eqns trying to get the answer out. Once i was told the right way to do it it worked out in a flash

Leaving Cert Student

Undeadfred wrote: »

Yeah its actually grand, fairly easy actually. Before I was using the (sum)x + (product) method incorrectly and so just got pages upon pages of huge long -b formula eqns trying to get the answer out. Once i was told the right way to do it it worked out in a flash

The other way should work too.. note it is -(sum)x

Undeadfred

yeah i was doing (root + root = sum) rather than -sum
I was also doing (product = c) rather than (product = ac)

Leaving Cert Student

Undeadfred wrote: »

yeah i was doing (root + root = sum) rather than -sum
I was also doing (product = c) rather than (product = ac)

Why?

Undeadfred

Leaving Cert Student wrote: »

Why?

vaguely knew the method so tried to figure it out messing around with roots and factors of normal quadratics. Needless to say i didn't deduce the right methed

aq11

Does anyone know how to do Q3 (b) on that sample D? I'm not sure how to do it, also is that α β thing on our course?